border-top-1px($color)
  position:relative
  &:before
    content:''
    position:absolute
    top:0
    left:0
    display:block
    width:100%
    border-bottom:1px solid $color
border-bottom-1px($color)
  position:relative
  &:after
    content:''
    position:absolute
    bottom:0
    left:0
    display:block
    width:100%
    border-bottom:1px solid $color


